Add a Test::Unit generator and hook to create default decorator tests

lib/generators/test_unit/decorator_generator.rb

@@ -0,0 +1,17 @@
+module TestUnit
+  class DecoratorGenerator < ::Rails::Generators::NamedBase
+    source_root File.expand_path('../templates', __FILE__)
+
+    TEST_ROOT = 'test/decorators/'
+    APPLICATION_DECORATOR_TEST = 'application_decorator_test.rb'
+    APPLICATION_DECORATOR_TEST_PATH = TEST_ROOT + APPLICATION_DECORATOR_TEST
+
+    def build_model_and_application_decorator_tests
+      empty_directory TEST_ROOT
+      unless File.exists?(APPLICATION_DECORATOR_TEST_PATH)
+        template APPLICATION_DECORATOR_TEST, APPLICATION_DECORATOR_TEST_PATH
+      end
+      template 'decorator_test.rb', "#{TEST_ROOT}#{singular_name}_decorator_test.rb"
+    end
+  end
+end

lib/generators/test_unit/templates/application_decorator_test.rb

@@ -0,0 +1,11 @@
+require 'test_helper'
+
+class ApplicationDecoratorTest < ActiveSupport::TestCase
+  def setup
+    ApplicationController.new.set_current_view_context
+  end
+
+  # test "the truth" do
+  #   assert true
+  # end
+end

lib/generators/test_unit/templates/decorator_test.rb

@@ -0,0 +1,12 @@
+require 'test_helper'
+
+class <%= singular_name.camelize %>DecoratorTest < ActiveSupport::TestCase
+  def setup
+    ApplicationController.new.set_current_view_context
+  end
+
+  # test "the truth" do
+  #   assert true
+  # end
+end
+

spec/generators/test_unit/decorator_generator_spec.rb

@@ -0,0 +1,28 @@
+require 'spec_helper'
+
+# Generators are not automatically loaded by Rails
+require 'generators/test_unit/decorator_generator'
+
+describe TestUnit::DecoratorGenerator do
+  # Tell the generator where to put its output (what it thinks of as Rails.root)
+  destination File.expand_path("../../../../tmp", __FILE__)
+
+  before { prepare_destination }
+
+  describe 'no arguments' do
+    before { run_generator %w(products)  }
+
+    describe 'test/decorators/application_decorator_test.rb' do
+      subject { file('test/decorators/application_decorator_test.rb') }
+      it { should exist }
+      it { should contain "class ApplicationDecoratorTest < ActiveSupport::TestCase" }
+    end
+
+    describe 'test/decorators/products_decorator_test.rb' do
+      subject { file('test/decorators/products_decorator_test.rb') }
+      it { should exist }
+      it { should contain "class ProductsDecoratorTest < ActiveSupport::TestCase" }
+    end
+
+  end
+end